From owner-freebsd-hackers@FreeBSD.ORG Tue Dec 30 13:20:55 2008 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E25AA106566C for ; Tue, 30 Dec 2008 13:20:55 +0000 (UTC) (envelope-from mailnull@mips.inka.de) Received: from mail-in-03.arcor-online.net (mail-in-03.arcor-online.net [151.189.21.43]) by mx1.freebsd.org (Postfix) with ESMTP id 934A48FC17 for ; Tue, 30 Dec 2008 13:20:55 +0000 (UTC) (envelope-from mailnull@mips.inka.de) Received: from mail-in-17-z2.arcor-online.net (mail-in-17-z2.arcor-online.net [151.189.8.34]) by mail-in-03.arcor-online.net (Postfix) with ESMTP id 783062CA9FC for ; Tue, 30 Dec 2008 14:20:54 +0100 (CET) Received: from mail-in-01.arcor-online.net (mail-in-01.arcor-online.net [151.189.21.41]) by mail-in-17-z2.arcor-online.net (Postfix) with ESMTP id 615CB45C0DF for ; Tue, 30 Dec 2008 14:20:54 +0100 (CET) Received: from lorvorc.mips.inka.de (dslb-092-075-107-001.pools.arcor-ip.net [92.75.107.1]) by mail-in-01.arcor-online.net (Postfix) with ESMTP id 3554419B327 for ; Tue, 30 Dec 2008 14:20:51 +0100 (CET) Received: from lorvorc.mips.inka.de (localhost [127.0.0.1]) by lorvorc.mips.inka.de (8.14.3/8.14.3) with ESMTP id mBUDKope051998 for ; Tue, 30 Dec 2008 14:20:50 +0100 (CET) (envelope-from mailnull@lorvorc.mips.inka.de) Received: (from mailnull@localhost) by lorvorc.mips.inka.de (8.14.3/8.14.3/Submit) id mBUDKom4051997 for freebsd-hackers@freebsd.org; Tue, 30 Dec 2008 14:20:50 +0100 (CET) (envelope-from mailnull) From: naddy@mips.inka.de (Christian Weisgerber) Date: Tue, 30 Dec 2008 13:20:50 +0000 (UTC) Message-ID: References: <20081230004747.GA55542@lorvorc.mips.inka.de> <20081230020524.2563a6ac@gluon> Originator: naddy@mips.inka.de (Christian Weisgerber) To: freebsd-hackers@freebsd.org X-Virus-Scanned: ClamAV 0.94.1/8814/Tue Dec 30 09:43:21 2008 on mail-in-01.arcor-online.net X-Virus-Status: Clean Subject: Re: lzo2 shows insane speed gap X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Dec 2008 13:20:56 -0000 Bruce Cran wrote: > I'm running 8.0-CURRENT amd64 here on a Turion64 X2 machine. Without > malloc debugging (malloc.conf -> aj) 'make test' takes 25s; after > removing malloc.conf thus turning on debugging, it takes over 10 > minutes. Wow! That. Is. It. Toggling malloc debugging option J makes the "slow" machines "fast" and vice versa. > > Athlon 64 X2 5200+ 2.6 GHz, FreeBSD 8.0-CURRENT amd64 ~60 min 19 seconds. I guess that falls under the "obvious" configuration differences to check, but since it usually doesn't cause a significant slowdown I completely forgot about it. Embarrassing. But still. Two orders of magnitude? That is a pathological case. -- Christian "naddy" Weisgerber naddy@mips.inka.de